Rise rate and timing variability of surface electromyographic activity during rhythmic drumming movements in the world's fastest drummer
Rise rate and timing variability of surface electromyographic activity during rhythmic drumming movements in the world's fastest drummer
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DOI：
10.1016/j.jelekin.2011.10.004
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发表时间：
2012-02-01
影响因子：
2.5
通讯作者：
Moritani, Toshio
中科院分区：
文献类型：
--
作者：
Fujii, Shinya;Moritani, Toshio
世界上最快的鼓手（WFD）的国际比赛的赢家可以用一只手用10 Hz的手持鼓槌进行重复的手腕敲击动作，比一般人群的最大敲击频率5-7 Hz快得多。然而，促进这种性能提高的肌肉活动直到最近才被探索。本研究探讨了WFD的腕屈/伸肌表面肌电图（EMG）活动的上升率和时间变异性，并将其与两个对照组：非鼓手（ND）和普通鼓手（OD）进行了比较。与ND和OD相比，WFD的肌电振幅上升更快，肌电活动下降更早，肌肉激活时间更稳定。此外，在鼓手组中，EMG上升率与鼓训练的持续时间之间存在显著相关性（即，ODs和WFD）。这些结果表明，WFD的10 Hz性能是通过手腕肌肉的“更尖锐”和“更少噪音”的爆发模式来实现的，并且鼓训练将具有增加肌肉张力发展速度的效果。(C)2011爱思唯尔有限公司版权所有。
The winner of an international contest to find the world's fastest drummer (WFD) can perform repetitive wrist tapping movements with one hand using a handheld drumstick at 10 Hz, much faster than the maximum tapping frequency of 5-7 Hz in the general population. The muscle activity facilitating this improved performance, however, has only recently been explored. The present study investigated the rise rate and timing variability of surface electromyographic (EMG) activity of wrist flexor/extensor muscles in the WFD, and compared them with those in two control groups: non-drummers (NDs) and ordinary drummers (ODs). The WFD showed more rapid EMG amplitude rise, earlier decline of EMG activity, and more stable muscle activation time than the NDs and ODs. In addition, there was a significant correlation between the EMG rise rate and the duration of drum training in the group of drummers (i.e., ODs and WFD). These results indicate that the 10-Hz performance of the WFD was achieved by a 'sharper' and 'less noisy' burst pattern of wrist muscles, and that drum training would have the effect to increase the speed of development of muscle tension. (C) 2011 Elsevier Ltd. All rights reserved.